Home / 1,200,878.12-1,656,940.52-717,348.62

Finding the Fourth Proportional to 1,200,878.12, 1,656,940.52 and 717,348.62

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Solution

The fourth proportional to 1,200,878.12, 1,656,940.52 and 717,348.62 is: 989,779.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,878.12 : 1,656,940.52 = 717,348.62 : x
  2. Step 2: Convert to fraction form
    1,200,878.12/1,656,940.52 = 717,348.62/x
  3. Step 3: Cross multiply
    1,200,878.12x = 1,656,940.52 × 717,348.62
  4. Step 4: Simplify right side
    1,200,878.12x = 1,188,603,995,444.08
  5. Step 5: Solve for x
    x = 1,188,603,995,444.08/1,200,878.12
  6. Step 6: Final answer
    x = 989,779.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.